64942180 has 12 divisors (see below), whose sum is σ = 136378620. Its totient is φ = 25976864.

The previous prime is 64942177. The next prime is 64942201. The reversal of 64942180 is 8124946.

It can be written as a sum of positive squares in 2 ways, for example, as 24186724 + 40755456 = 4918^2 + 6384^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1623535 + ... + 1623574.

It is an arithmetic number, because the mean of its divisors is an integer number (11364885).

Almost surely, 2^64942180 is an apocalyptic number.

It is an amenable number.

64942180 is an abundant number, since it is smaller than the sum of its proper divisors (71436440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64942180 is a wasteful number, since it uses less digits than its factorization.

64942180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3247118 (or 3247116 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 64942180 is about 8058.6711063301. The cubic root of 64942180 is about 401.9533208177.

The spelling of 64942180 in words is "sixty-four million, nine hundred forty-two thousand, one hundred eighty".